Sash-fastener



(No Model.)

SASH FASTENER.

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nf 5 v M 7 may@ n QI. mv Mr fx/ I UNITED STATES `PATENT OFFICE.

BENJAMINr F. CORNELL, OF OHIOAGO,ILLINOIS.` v

sAsH-FAsTENER.

SPECIFICATION forming part of Letters Patent No. 598,696, dated February s, 189s.

Application led September 3, 12,396. Serial No. 604,794. (No model.)

To @ZZ Awhom/t may concern:

Be it known that I, BENJAMIN F. CORNELL, a citizen of `the United States, residing at Chicago, in the county of Cook and State of Illinois, have Vinvented 4certain new and useful Improvements in Sash Fasteners, of which the following is a full, clear, and exact speci- Iication.

My invention relates more particularly to th at form of sash-fastenersemployed for locking the two sashes of the window together and which is usually securedto the upper part of the lower sash and bears against some portion of the upper one; and my invention has for its primary obj ect to provide an improved and simple form of device for this purpose which will lock the two sashes together at any desired relative position, so that the window may be left open a sufficient distance for ventilation either at the top or bottom,or both, with the assurance that the bottom sash cannot be pushed farther upward or the top one pulled down a sufficient extent to enable a person to gain access to the room or house through the window withoutdirst releasing the lock or fastener.

Vith these ends in view my invention consists in certain features of novelty shown in the drawings, described in the specication, and particularly pointed out in the claims.

\ In the said drawings, Figure 1 is a -face view of a portion of the upper and lower sashes of the window provided with my improved lock. Fig. 2 is a vertical section thereof, taken on the line 2 2, Fig. 1,'showing the lock or fastener thrown off or in its released` position. Fig. 3 is a view similar to Fig. 1, showing the fastener in its operative or engagingposition and Fig. et is a detail view of the locking-eccentric in side elevation, illustrating certain modifications in the manner of attaching the frictionshoe thereto.

In carrying out my invention I employ a suitable casing 1,` which is provided' at its lower side with feet or flanges 2, having perforations for the passage of screws 3 or other y fastening devices by means of which the caslthe ange 11, formed by the countersink or' recess 8, so thatthe pressure of the ends 10 of the spring will tend to rotate the eccentric to the right, as viewed in Figs. 2 and 3. The other end 12 of the spring is bent laterally or at substantially right angles and rests upon a nose or hook 13, formed on or securedto a pawl 14, which is adapted to engage with any one of a series of teeth l5, formed on one edge of the eccentric, so that the eccentric will beheld from turning to the left against the inertia of the end 10 of the spring. Theopposite edge or side of the eccentric is adapted to engage with and bind against the rail 5 of the upper sash, and in order that the latter may not be marred by this engagement of the eccentric the latter is provided with` a shoe 16, constructed of some reasonably soft or yielding material-such, for instance, as vulcanized rubber-Which may be secured to the eccentric in a circular form in any desired manner. The means shown in Figs. 2 and 3 for attaching this shoe 16 to the eccentric consists of a dovetail 17, formed on the shoe at or near each end thereof and engaging in a dovetailgroove formed in the edge of the eccentric. Y

The end of the journal or pivot-pin 6 is provided on the exterior of the casing 1 with an operating knob or thumb-piece 18, whereby the eccentric may be turned back against the inertia of the spring to the position shown in Fig. 2, and when in such position it is held fromA rengagement with the sash by means of a heel-piece 19, formed on the under side of the pawl 14 and adapted to engage with a tooth or lug 20, formed on the eccentric at the upper end of the series of teeth 15. The pawl 14 is journaled on and supported by a pin 21, whose ends engage in the sides of theV casing 1 or other convenient parts, and the IOO pawl is also formed with a thumb-piece 22, which projects through a rear opening 23 in the casing 1. When it is desired to lock the sashes together or to arrange the device so that it will be in readiness to lock the sashes together in the event the attempt is made to either raise the lower sash or lower the upper one, the thumb-piece 22 is pressed downward until the heel 14 releases the lug 20, whereupon the end 10 of the spring will throw the shoe 16 against the rail 5 of the upper sash, as shown in Fig. 3. made to raise the lower sash, it will be seen that the friction of the shoe 16 against the upper sash will cause the rotation of the eccentric, and will consequently force the 'shoe i against the upper sash and bind the two sashes together in direct ratio 'to the upward pres-1y sure;v or, on the other hand,should the at-c tempt to lower the upper sash be made the same eect will be produced, and in either event should the pressure be continued sufticiently far to compress the rubber shoe 16 the tooth 24, formed on the eccentric at the (md, of the' shoe 16, will come into engagement; .with the upper sash, and digging thereinto g will absolutely prevent any further rotation A 'similar tooth 25 may be arranged at the lower end of the shoe 16 forI of the eccentric.

protecting the same.

When it is desired to release the lock, the@k pawl 14 is thrown out of engagement with the teeth 15 by pressing` upon the thumbpiece 22, and the eccentric is rotated backwardly by means of the knob 18 until the lug:l

2O engages under the heel 19.

In theevent the lower sash should not'be provided with sash-weights and it should vbe` ldesired to utilize the fastener for holding the sash at the desired elevation the shoe 16mayl be turned against the upper sash, as before described, and the lower one then pushed upt It will be held in this position by the pawl 14 engaging with the teeth 15, if not by the friction of the lower until the shoe firmly binds.

sash against the inner bead.

If now an attempt isj centric yin engagement and having a heelpiece adapted to engage with said lug for Iholding the eccentric out of engagement, a

spring normally tending to force said eccentric into engagement and im peiling 'said pawl toward said teeth and lug, and means for re# leasing said pawl, substantially as set forth.

2. The combination with the upper and lower sashes, of an eccentric mounted upon the lower sash and adapted to bear against the upper sash and being provided on one side with the flange 11 and having a series of teeth and a lug, a pawl arranged to engage with said teeth for holding said eccentric in engagement and having a heel-piece adapted to engage with said lug for holding the eccentric out of engagement, a spring having one end bearing against said flange 11 and its other end bearing against said pawl whereby the pawl will be impelled toward the eccentric and the eccentric impelled toward the upper sash, vsubstantially as rset forth. 3. The combination with the upper and lower sashes, of an eccentric secured to the lower sash, a compressible lshoe secured to one'side of said eccentric and adapted to bear against the upper sash, said eccentric being provided with the tooth 24 at or near one end of said shoe, substantially as set forth.

BENJAMIN F. CORNELL. Witnesses:

F. A. HOPKINS, EDNA B. JoHNsoN. 

